Composition for waterproofing cloth



UNITED STATES PATENT OFFICE.

COMPOSITION FOR WATERPROOFING CLOTH.

No Drawing.

To all whom it may concern:

Be it known that I, NELSON C. BISSELL, a citizen of the United States, residin at Modesto, county of Stanislaus, State of alifornia; have invented certain new and useful Improvements in Compositions for Waterproofing Cloth; and I do declare the follow ing to be a full, clear, and exact descriptlon of the same.

This invention relates to improvements in waterproofing substances, being particularly adapted to be applied to the material of which automobile tops and the like are constructed, and which are constantly exposed to all kinds of weather. The principal object of my invention is to provide a substance, inexpensive of manufacture and easy of application, which will effectually waterproof the mohair or kindred textile used for the top, etc.,' without the danger of the goods crackin when folded dueto its having lost its pllability. In other words, the material to which my, substance is applied does not become stiff and rigid by so treating it, but retains whatever flexibility it.

originally possessed.

The principal ingredients used in the preparation of my com osition are gasolene, asphaltum, paraflin an rubber.

The above ingredients are thoroughly mixed together, this being done for convenience and ease of handlinginseparate stages, the gasolene being the solvent for the other ingredients which makes it easier to more thoroughly combine them, besides giving a final result which may be readily palnted or flowed onto the goods.

The asphaltum and some gasole'ne then are mixed together first to dissolve the asphaltum, the proportions used being 5 gallons of .gasolene to 20 pounds of asphaltum. o

The paraflin and some gasolene are then mixed together separately for the same purpose-to dissolve the parafiin, the proportions being 5 allons of gasolene to 3% pounds of pa'raflIn. The resultant solutions are then thoroughly mixed together, after which about one pint of vulcanizing rubber dissolved in 1 gallon of gasolene is added. This vul-i canizing, or liquid rubber as it is sometimes called, consists usually of finePara rubber dissolved in a suitable solvent so as to be a semi-fluid substance.

Specification of Letters Patent.

' proofing qualities.

Patented Sept. 27, 1921.

Application filed October 7, 1920. Serial No. 415,398.

When the ingredients are thus combined, the substance is ready to apply to the cloth, and will impart waterproofing qualities to it, besides coloring it a deep and fast black and imparting a soft gloss thereto.

Two coats or applications are usually sufficient, enough time being allowed between each coatto allow the gasolene to entirely evaporate. I

Should it be desired, certain pigments may be added to impart color to the waterproofed cloth.

The asphaltum gives the color to the substance, and provides the body which fills the pores of the cloth.

The paraffin keeps the asphaltum from becoming sticky from the heat of the sun, keeps the cloth pliable and tends to produce a glossy effect and also adds to the water- The rubber adds to the gloss and to the waterproofing, and acts 'as a binder. It also tends to prevent separa-' tion or precipitation of the paraflin and asphaltum in solution, from long standing.

The principal'function of the gasolene, as before indicated, is to serve asthe common solvent and to form the substance as a thin liquid which may be. easily manipulated with a brush so that the solid matter in suspension may thoroughly penetrate the pores- .and 1 pint vulcanizing rubber, and a common solvent for said ingredients. 2. A composition for waterproofing cloth consisting of asphaltum, paraffin and liquid rubber mixed together in the proportions of 20 pounds asphaltum, 3;} pounds parafiin and 1 pint vulcanizing rubber, andill gallons of volatile solvent in which said ingredients are dissolved.

In testimony whereof I afilx my si ature.

' NELSON C. BISS LL, 

